Mitsubishi Heavy Industries’s Launch Services division is all set to send a crucial cargo payload to the International Space Station from JAXA today. The launch is scheduled for 6:33 AM Japan Standard Time (5:33 PM ET/2:33 PM PT), and will take off from Tanegashima Island, at JAXA’s Tanegashima Space Center.

The rocket used for this launch is the Mitsubishi Heavy Industries (MHI) H-IIB, and this is the eighth flight launch of the H-11 Transfer Vehicle (HTV) that MHI designed and built in Japan.

In the H-IIB configuration, the MHI-built rocket that will transport he HTV includes a liquid propellant central core, along with four solid propellant rocket boosters to give it additional life capacity. This particular mission will see the HTV loaded with 5.3 metric tons (just under six U.S. tons) of supplies for the ISS on board in both pressurized and unpressurized cargo containers which divvy up the total capacity.

One of the crucial pieces of cargo going up is a small satellite deployment device called ‘Kibo’ created by the Kyushu Institute of Technology and the National Authority for Remote Sensing and Space Science. It’ll be used to deploy a range of super compact ‘CubeSats’ also on board, including a propulsion tech demo create by the University of Tokyo and startup Space BD, which is the first company awarded a contract by JAXA to be the commercial operator for deploying smallsats from the ISS via Kibo.

NASA TV will be carrying the launch live via the stream above, with their coverage kicking off around 5 PM ET (2 PM PT/6 AM JST).